Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Components (hierarchy name)
4. components (objects parts)
5. [components by specific context]
6. material components
7. ions

Anotations

Scope note:

Ions that have gained one or more electrons and thereby carry a negative electric charge, so-called because when an electric current is passed through a conducting solution the negative ions present in the solution are attracted to the anode.